Free AI Detector

Check whether your text looks AI-generated by ChatGPT, GPT-5, Gemini, or Claude

0/5,000 characters
%

of the text may be AI-generated

  • AI-generated
    -- %
  • Human-written
    -- %
Free plan: 10 AI checks per day. Upgrade for more
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What Is an AI Detector?

An AI detector, also called an AI checker or AI content detector, analyzes text to estimate whether it was written by AI. Paste your text into OpenL to get an AI likelihood score, compare AI-generated and human-written percentages, and review highlighted sentences that may look AI-written. It is useful for students, educators, editors, marketers, and content teams reviewing text before publication or submission.

How to Use the AI Detector?

  1. Step 1

    Paste your text

    Enter the text you want to check with the AI detector.

  2. Step 2

    Run the AI check

    Click Detect AI Text to analyze your text and get an AI likelihood score.

  3. Step 3

    Review the results

    Compare the AI and human-written percentages.

Save up to 50% with yearly

  • Starter

    $8.9/month, billed yearly
    Get Started
    • Unlimited Fast Credits
    • 3 image to image translations/day
    • Supports scanned PDF translations
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    • Up to 30,000 characters at once
    • Upload files up to 30 MB
    • Cancel anytime
    • Ad free
    • And much more →
  • Most Popular

    Pro 50% OFF

    $9.9/month, billed yearly

    Upgrade now
    • 1,000 Advanced Credits/month
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    • Unlimited Fast Credits
    • 10 image to image translations/day
    • Supports scanned PDF translations
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    • Up to 100,000 characters at once
    • Upload files up to 100 MB
    • Unlimited AI Detection
    • Translate Agent
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    • Pro OCR
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    • Chrome extension support
    • Cancel anytime
    • Ad free
    • And much more →

  • Ultimate

    $29.9/month, billed yearly
    Get Started
    • Unlimited Advanced Credits
      i
    • Unlimited Fast Credits
    • 30 image to image translations/day
    • Supports scanned PDF translations
      i
    • Up to 150,000 characters at once
    • Upload files up to 100 MB
    • Unlimited AI Detection
    • Translate Agent
      i
    • Pro OCR
      i
    • Chrome extension support
    • Cancel anytime
    • Ad free
    • And much more →
Payments by

  • It makes my surprise at its quality and score even bigger. I can only repeat myself, a really strong showing.

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  • I find myself turning to OpenL more and more for any task that requires high accuracy, document integrity, and peace of mind about my data.

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  • This is of great help to express oneself into another language which is not my mother tongue. Good to know the message comes across without possible misunderstandings in communication. Great tool!

    From TrustpilotTrustpilot

Frequently asked questions

AI Detector FAQs

Quick answers about OpenL AI Detector

What is an AI detector? +

An AI detector, also called an AI checker, estimates whether text contains patterns commonly found in AI-generated writing. OpenL returns an AI likelihood score and highlights sentences that may look AI-generated.

Can OpenL detect text from ChatGPT, GPT-5, Gemini, or Claude? +

OpenL checks for writing patterns associated with ChatGPT, GPT-5, Gemini, Claude, and other large language models. It estimates whether text looks AI-generated but cannot identify the source model with certainty.

How do I use OpenL AI Detector? +

Paste your text into the detector, click Detect AI Text, and review the score, breakdown, and highlighted sentences. A complete passage usually provides a clearer signal than a short phrase.

Is OpenL AI Detector free? +

Yes. The free plan includes up to 10 checks per day and up to 5,000 characters per scan.

Is an AI detector the same as a plagiarism checker? +

No. An AI detector estimates whether writing resembles AI-generated text, while a plagiarism checker looks for matching or copied sources. They answer different questions.

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